If you listen to a lot of music on your iOS device, you might want to take a look at this really cool new jailbreak tweak.

Spectral by iOS developer Adam Bell adds a nice touch to your iOS 7 lock screen, by colorizing the background of your lock screen to appear as a blurred version of the album artwork, as shown above.

It is slightly difficult to see the difference between the two without concentrating, but what this tweak does is replace the lock screen wallpaper behind the album art with an enlarged version of the album artwork, which has been blurred beyond recognition. You can slightly see in the image example above that the screenshot on the right takes the colors from the album art rather than colors from the lock screen wallpaper.

It's a very subtle change to the colors on the lock screen, and it's a very nice aesthetic touch to any iOS device filled with lots of different kinds of music.

Without Spectral, the lock screen shows the lock screen wallpaper image blurred behind the album art, instead of the blurred album artwork:

The tweak adds a simple preferences pane to the Settings application where you can easily enable or disable the tweak on demand:

If you want to grab Spectral for the cool effects that it gives your lock screen while listening to music, it's currently free on Cydia's BigBoss repository. Spectral is also open source, and if you're interested, you can view the source code on Github via this link.

I do like/respect all the people involved in the Dev. and this article, its hard for me to justify the time Anthony spent writing the post and certainly don't see why a developer would waste time on this unless they are just as anal as I am. Yet I still don't see it...

The look of it is actually not that bad guys. I like it specifically because I use a plain black wallpaper for my lock screen, so this changes it up when I'm listening to music. Im anal about all my songs having proper album covers, so this kind of compliments the effort I put in.

However the problem and the reason I uninstalled this, is that it's very laggy. Your iPhone becomes completely unresponsive for a couple seconds when you change songs as the tweak transitions itself from one album cover to the next.

It did take me a while to spot the difference in the before and after pictures. Could've done a better job with that..

"Anal" in this context refers to the second stage of Sigmund Freud's theory of psychosexual development. He argued that parental conflict during this stage could result in the child developing an anal-retentive personality in adult life which is closely associated with Obsessive Compulsive Disorder (OCD).

It's now a commonality to hear the term "anal" as a reference to aspects of OCD such as wanting things to look clean and tidy